Architectures for sharing of current sources in an implantable medical device
First Claim
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1. An implantable stimulator device, comprising:
- X number of groups each comprising a plurality of electrodes, wherein the number X comprises a plurality;
a plurality of current sources; and
a group selection matrix comprising the number X group control signal lines, each of the X group control signal lines configured to carry a group control signal to simultaneously couple the plurality of current sources to one of the X groups of the plurality of electrodes.
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Abstract
A group select matrix is added to an implantable stimulator device to allow current sources to be dedicated to particular groups of electrodes at a given time. The group select matrix can time multiplex the current sources to the different groups of electrodes to allow therapy pulses to be delivered at the various groups of electrodes in an interleaved fashion. Each of the groups of electrodes may be confined to a particular electrode array implantable at a particular non-overlapping location in a patient'"'"'s body. A switch matrix can be used in conjunction with the group select matrix to provide further flexibility to couple the current sources to any of the electrodes.
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17 Claims
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1. An implantable stimulator device, comprising:
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X number of groups each comprising a plurality of electrodes, wherein the number X comprises a plurality; a plurality of current sources; and a group selection matrix comprising the number X group control signal lines, each of the X group control signal lines configured to carry a group control signal to simultaneously couple the plurality of current sources to one of the X groups of the plurality of electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An implantable stimulator device, comprising:
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a case; a plurality of arrays coupled to the case, wherein each array comprises a group of N number of electrodes configured for implantation at a location in a patient, wherein the number N comprises a plurality; the number N current sources inside the case; and a group selection matrix inside the case comprising a plurality of group control signal lines, each group control signal line comprising a single signal line specific to one of the groups and configured to carry a group control signal to couple each of the N current sources to a different one of the N electrodes in that group. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification